PRODUCT IMPROVEMENT CAMPAIGN: NU 2.0L GDI - KNOCK SENSOR DETECTION SYSTEM (KSDS) ECU LOGIC IMPROVEMENT (PI2107) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area.This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS), in order to protect the engine from excessive connecting rod bearing damage. This update is for certain 2017-2019MY Soul (PS) vehicles equipped with Nu 2.0L GDI engines, produced from July 29, 2016 through December 21, 2018.